public Server()
{
ep = new IPEndPoint(ip, 10240);
using (MessangerContext context = new MessangerContext())
{
if (!context.Users.Where(user => user.Name == "General Chat").Any())
{
context.Users.Add(new User()
{
Name = "General Chat"
});
context.SaveChanges();
}
}
}
public void Start()
{
s.Bind(ep);
s.Listen(10);
try
{
while (true)
{
Socket client = s.Accept();
Console.WriteLine(client.RemoteEndPoint.ToString());
byte[] buffer = new byte[1024];
int l = client.Receive(buffer);
string login = System.Text.Encoding.ASCII.GetString(buffer, 0, l);
if (clients.ContainsKey(login) || login == "General Chat")
{
client.Send(Encoding.Unicode.GetBytes("Such user already exists"));
Thread.Sleep(10);
}
else
{
Console.WriteLine("Логин клиента : " + login);
clients[login] = client;
using (MessangerContext context = new MessangerContext())
{
var res = context.Users.Where((user) => user.Name == login);
if (!res.Any())
{
context.Users.Add(new User()
{
Name = login
});
context.SaveChanges();
}
}
client.Send(Encoding.Unicode.GetBytes("Ok"));
Thread.Sleep(50);
Task.Run(() => ReceiveMessage(client));
}
}
}
catch (SocketException ex)
{
Console.WriteLine(ex.Message);
}
}
private void ReceiveMessage(Socket socket)
{
byte[] buffer = new byte[5000];
int l;
string login = clients.Where((x) => x.Value == socket).First().Key;
StringBuilder stringBuilder = new StringBuilder();
stringBuilder.Append("$123$%^");
foreach (var item in clients.Keys)
{
if (item != login)
{
stringBuilder.Append(item + "^");
}
}
stringBuilder.Remove(stringBuilder.Length - 1, 1);
foreach (var sock in clients.Values)
{
if (sock != socket)
{
sock.Send(Encoding.Unicode.GetBytes("$123$%^" + login));
}
else
{
sock.Send(Encoding.Unicode.GetBytes(stringBuilder.ToString()));
}
}
do
{
try
{
l = socket.Receive(buffer);
string msg = System.Text.Encoding.Unicode.GetString(buffer, 0, l);
login = clients.Where((x) => x.Value == socket).First().Key;
if (msg.StartsWith("$456$%"))
{
string[] msgs = msg.Split('^');
List <Message> messages;
string receiver = msgs[1];
using (MessangerContext context = new MessangerContext())
{
if (receiver == "General Chat")
{
messages = context.Messages.Include(user => user.Receiver).Include(user => user.Sender).Where(mess => mess.Receiver.Name == receiver).ToList();
}
else
{
messages = context.Messages.Include(user => user.Receiver).Include(user => user.Sender).Where(mess => mess.Sender.Name == login).Where(mess => mess.Receiver.Name == receiver).ToList();
var receivedMessages = context.Messages.Include(user => user.Receiver).Include(user => user.Sender).Where(mess => mess.Sender.Name == receiver).Where(mess => mess.Receiver.Name == login).ToList();
messages.AddRange(receivedMessages);
}
}
/*
* ToList нужен для корректной сортировке, без него сортирует, но только в формате
* Sender1 14:36
* Sender1 14:46
* Sender2 14:35
* Sender2 14:37
*/
messages = messages.OrderBy(mess => mess.DateOfSendingMessage).ToList();
stringBuilder = new StringBuilder();
stringBuilder.Append("$456$%^");
if (messages.Count < 1)
{
stringBuilder.Append("No messages");
}
else
{
foreach (var message in messages)
{
stringBuilder.Append($"{message.Sender.Name}: {message.MessageContent} ({message.DateOfSendingMessage.ToString()})^");
}
stringBuilder.Remove(stringBuilder.Length - 1, 1);
}
socket.Send(Encoding.Unicode.GetBytes(stringBuilder.ToString()));
}
else
{
string[] msgs = msg.Split('^');
string receiver = msgs[0];
string messageContent = msgs[1];
DateTime date = new DateTime(long.Parse(msgs[2]));
Message message = new Message();
using (MessangerContext context = new MessangerContext())
{
message.Receiver = context.Users.Where(user => user.Name == receiver).First();
message.Sender = context.Users.Where(user => user.Name == login).First();
message.MessageContent = messageContent;
message.DateOfSendingMessage = date;
context.Messages.Add(message);
context.SaveChanges();
}
if (receiver == "General Chat")
{
Console.WriteLine(receiver);
foreach (var sock in clients.Values)
{
if (socket != sock)
{
sock.Send(Encoding.Unicode.GetBytes($"{receiver}^{login}^{messageContent}^{date.ToString()}"));
}
}
}
else
{
foreach (var item in clients.Keys)
{
if (item == receiver)
{
clients[item].Send(Encoding.Unicode.GetBytes($"{login}^{receiver}^{messageContent}^{date.ToString()}"));
break;
}
}
}
}
}
catch (SocketException)
{
login = clients.Where((x) => x.Value == socket).First().Key;
clients.Remove(login);
Console.WriteLine("User " + login + " disconnected");
foreach (var sock in clients.Values)
{
sock.Send(System.Text.Encoding.Unicode.GetBytes("$321$%^" + login));
Thread.Sleep(50);
}
return;
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
} while (true);
}
